(a) Originally, and properly, a member of the Adventist (or Millerite) movement or of any one of the six (now five) Adventist church bodies ( SB , no. 6 ) that sprang from it; (b) in Seventh-day Adventist usage, a short term for “Seventh-day Adventist”; (c) in some dictionaries, any believer in “Adventism,” which they define loosely as the doctrine of the nearness of the Second Advent and the end of the world, or age. The terms Adventist and Adventism were coined by the Millerites ( SB , no. 7 ). Hence these terms are most correctly employed in the framework of Millerite eschatology, which included not only the teaching of the near, personal advent of Christ but also a distinctive body of doctrine concerning the events connected therewith. Understood in this way, Adventism was and ...

From the Seventh-day Adventist Encyclopedia. Published with permission from the Review and Herald Publishing Association.